source: MondoRescue/branches/2.2.9/mindi-busybox/scripts/kconfig/zconf.y@ 2820

Last change on this file since 2820 was 2725, checked in by Bruno Cornec, 15 years ago
  • Update mindi-busybox to 1.18.3 to avoid problems with the tar command which is now failing on recent versions with busybox 1.7.3
File size: 13.9 KB
RevLine 
[1765]1%{
2/*
3 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
4 * Released under the terms of the GNU GPL v2.0.
5 */
6
7#include <ctype.h>
8#include <stdarg.h>
9#include <stdio.h>
10#include <stdlib.h>
11#include <string.h>
12#include <stdbool.h>
13
14#define LKC_DIRECT_LINK
15#include "lkc.h"
16
17#define printd(mask, fmt...) if (cdebug & (mask)) printf(fmt)
18
19#define PRINTD 0x0001
20#define DEBUG_PARSE 0x0002
21
22int cdebug = PRINTD;
23
24extern int zconflex(void);
25static void zconfprint(const char *err, ...);
26static void zconf_error(const char *err, ...);
27static void zconferror(const char *err);
28static bool zconf_endtoken(struct kconf_id *id, int starttoken, int endtoken);
29
30struct symbol *symbol_hash[257];
31
32static struct menu *current_menu, *current_entry;
33
34#define YYDEBUG 0
35#if YYDEBUG
36#define YYERROR_VERBOSE
37#endif
38%}
39%expect 26
40
41%union
42{
43 char *string;
44 struct file *file;
45 struct symbol *symbol;
46 struct expr *expr;
47 struct menu *menu;
48 struct kconf_id *id;
49}
50
51%token <id>T_MAINMENU
52%token <id>T_MENU
53%token <id>T_ENDMENU
54%token <id>T_SOURCE
55%token <id>T_CHOICE
56%token <id>T_ENDCHOICE
57%token <id>T_COMMENT
58%token <id>T_CONFIG
59%token <id>T_MENUCONFIG
60%token <id>T_HELP
61%token <string> T_HELPTEXT
62%token <id>T_IF
63%token <id>T_ENDIF
64%token <id>T_DEPENDS
65%token <id>T_REQUIRES
66%token <id>T_OPTIONAL
67%token <id>T_PROMPT
68%token <id>T_TYPE
69%token <id>T_DEFAULT
70%token <id>T_SELECT
71%token <id>T_RANGE
72%token <id>T_ON
73%token <string> T_WORD
74%token <string> T_WORD_QUOTE
75%token T_UNEQUAL
76%token T_CLOSE_PAREN
77%token T_OPEN_PAREN
78%token T_EOL
79
80%left T_OR
81%left T_AND
82%left T_EQUAL T_UNEQUAL
83%nonassoc T_NOT
84
85%type <string> prompt
86%type <symbol> symbol
87%type <expr> expr
88%type <expr> if_expr
89%type <id> end
90%type <id> option_name
91%type <menu> if_entry menu_entry choice_entry
92
93%destructor {
94 fprintf(stderr, "%s:%d: missing end statement for this entry\n",
95 $$->file->name, $$->lineno);
96 if (current_menu == $$)
97 menu_end_menu();
98} if_entry menu_entry choice_entry
99
[2725]100%{
101#include "zconf.hash.c"
102%}
103
[1765]104%%
105input: stmt_list;
106
107stmt_list:
108 /* empty */
109 | stmt_list common_stmt
110 | stmt_list choice_stmt
111 | stmt_list menu_stmt
112 | stmt_list T_MAINMENU prompt nl
113 | stmt_list end { zconf_error("unexpected end statement"); }
114 | stmt_list T_WORD error T_EOL { zconf_error("unknown statement \"%s\"", $2); }
115 | stmt_list option_name error T_EOL
116{
117 zconf_error("unexpected option \"%s\"", kconf_id_strings + $2->name);
118}
119 | stmt_list error T_EOL { zconf_error("invalid statement"); }
120;
121
122option_name:
123 T_DEPENDS | T_PROMPT | T_TYPE | T_SELECT | T_OPTIONAL | T_RANGE | T_DEFAULT
124;
125
126common_stmt:
127 T_EOL
128 | if_stmt
129 | comment_stmt
130 | config_stmt
131 | menuconfig_stmt
132 | source_stmt
133;
134
135option_error:
136 T_WORD error T_EOL { zconf_error("unknown option \"%s\"", $1); }
137 | error T_EOL { zconf_error("invalid option"); }
138;
139
140
141/* config/menuconfig entry */
142
143config_entry_start: T_CONFIG T_WORD T_EOL
144{
145 struct symbol *sym = sym_lookup($2, 0);
146 sym->flags |= SYMBOL_OPTIONAL;
147 menu_add_entry(sym);
148 printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), $2);
149};
150
151config_stmt: config_entry_start config_option_list
152{
153 menu_end_entry();
154 printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
155};
156
157menuconfig_entry_start: T_MENUCONFIG T_WORD T_EOL
158{
159 struct symbol *sym = sym_lookup($2, 0);
160 sym->flags |= SYMBOL_OPTIONAL;
161 menu_add_entry(sym);
162 printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", zconf_curname(), zconf_lineno(), $2);
163};
164
165menuconfig_stmt: menuconfig_entry_start config_option_list
166{
167 if (current_entry->prompt)
168 current_entry->prompt->type = P_MENU;
169 else
170 zconfprint("warning: menuconfig statement without prompt");
171 menu_end_entry();
172 printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
173};
174
175config_option_list:
176 /* empty */
177 | config_option_list config_option
178 | config_option_list depends
179 | config_option_list help
180 | config_option_list option_error
181 | config_option_list T_EOL
182;
183
184config_option: T_TYPE prompt_stmt_opt T_EOL
185{
186 menu_set_type($1->stype);
187 printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
188 zconf_curname(), zconf_lineno(),
189 $1->stype);
190};
191
192config_option: T_PROMPT prompt if_expr T_EOL
193{
194 menu_add_prompt(P_PROMPT, $2, $3);
195 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
196};
197
198config_option: T_DEFAULT expr if_expr T_EOL
199{
200 menu_add_expr(P_DEFAULT, $2, $3);
201 if ($1->stype != S_UNKNOWN)
202 menu_set_type($1->stype);
203 printd(DEBUG_PARSE, "%s:%d:default(%u)\n",
204 zconf_curname(), zconf_lineno(),
205 $1->stype);
206};
207
208config_option: T_SELECT T_WORD if_expr T_EOL
209{
210 menu_add_symbol(P_SELECT, sym_lookup($2, 0), $3);
211 printd(DEBUG_PARSE, "%s:%d:select\n", zconf_curname(), zconf_lineno());
212};
213
214config_option: T_RANGE symbol symbol if_expr T_EOL
215{
216 menu_add_expr(P_RANGE, expr_alloc_comp(E_RANGE,$2, $3), $4);
217 printd(DEBUG_PARSE, "%s:%d:range\n", zconf_curname(), zconf_lineno());
218};
219
220/* choice entry */
221
222choice: T_CHOICE T_EOL
223{
224 struct symbol *sym = sym_lookup(NULL, 0);
225 sym->flags |= SYMBOL_CHOICE;
226 menu_add_entry(sym);
227 menu_add_expr(P_CHOICE, NULL, NULL);
228 printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
229};
230
231choice_entry: choice choice_option_list
232{
233 $$ = menu_add_menu();
234};
235
236choice_end: end
237{
238 if (zconf_endtoken($1, T_CHOICE, T_ENDCHOICE)) {
239 menu_end_menu();
240 printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno());
241 }
242};
243
244choice_stmt: choice_entry choice_block choice_end
245;
246
247choice_option_list:
248 /* empty */
249 | choice_option_list choice_option
250 | choice_option_list depends
251 | choice_option_list help
252 | choice_option_list T_EOL
253 | choice_option_list option_error
254;
255
256choice_option: T_PROMPT prompt if_expr T_EOL
257{
258 menu_add_prompt(P_PROMPT, $2, $3);
259 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
260};
261
262choice_option: T_TYPE prompt_stmt_opt T_EOL
263{
264 if ($1->stype == S_BOOLEAN || $1->stype == S_TRISTATE) {
265 menu_set_type($1->stype);
266 printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
267 zconf_curname(), zconf_lineno(),
268 $1->stype);
269 } else
270 YYERROR;
271};
272
273choice_option: T_OPTIONAL T_EOL
274{
275 current_entry->sym->flags |= SYMBOL_OPTIONAL;
276 printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno());
277};
278
279choice_option: T_DEFAULT T_WORD if_expr T_EOL
280{
281 if ($1->stype == S_UNKNOWN) {
282 menu_add_symbol(P_DEFAULT, sym_lookup($2, 0), $3);
283 printd(DEBUG_PARSE, "%s:%d:default\n",
284 zconf_curname(), zconf_lineno());
285 } else
286 YYERROR;
287};
288
289choice_block:
290 /* empty */
291 | choice_block common_stmt
292;
293
294/* if entry */
295
296if_entry: T_IF expr nl
297{
298 printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno());
299 menu_add_entry(NULL);
300 menu_add_dep($2);
301 $$ = menu_add_menu();
302};
303
304if_end: end
305{
306 if (zconf_endtoken($1, T_IF, T_ENDIF)) {
307 menu_end_menu();
308 printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
309 }
310};
311
312if_stmt: if_entry if_block if_end
313;
314
315if_block:
316 /* empty */
317 | if_block common_stmt
318 | if_block menu_stmt
319 | if_block choice_stmt
320;
321
322/* menu entry */
323
324menu: T_MENU prompt T_EOL
325{
326 menu_add_entry(NULL);
327 menu_add_prompt(P_MENU, $2, NULL);
328 printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
329};
330
331menu_entry: menu depends_list
332{
333 $$ = menu_add_menu();
334};
335
336menu_end: end
337{
338 if (zconf_endtoken($1, T_MENU, T_ENDMENU)) {
339 menu_end_menu();
340 printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno());
341 }
342};
343
344menu_stmt: menu_entry menu_block menu_end
345;
346
347menu_block:
348 /* empty */
349 | menu_block common_stmt
350 | menu_block menu_stmt
351 | menu_block choice_stmt
352;
353
354source_stmt: T_SOURCE prompt T_EOL
355{
356 printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
357 zconf_nextfile($2);
358};
359
360/* comment entry */
361
362comment: T_COMMENT prompt T_EOL
363{
364 menu_add_entry(NULL);
365 menu_add_prompt(P_COMMENT, $2, NULL);
366 printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno());
367};
368
369comment_stmt: comment depends_list
370{
371 menu_end_entry();
372};
373
374/* help option */
375
376help_start: T_HELP T_EOL
377{
378 printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
379 zconf_starthelp();
380};
381
382help: help_start T_HELPTEXT
383{
384 current_entry->sym->help = $2;
385};
386
387/* depends option */
388
389depends_list:
390 /* empty */
391 | depends_list depends
392 | depends_list T_EOL
393 | depends_list option_error
394;
395
396depends: T_DEPENDS T_ON expr T_EOL
397{
398 menu_add_dep($3);
399 printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno());
400}
401 | T_DEPENDS expr T_EOL
402{
403 menu_add_dep($2);
404 printd(DEBUG_PARSE, "%s:%d:depends\n", zconf_curname(), zconf_lineno());
405}
406 | T_REQUIRES expr T_EOL
407{
408 menu_add_dep($2);
409 printd(DEBUG_PARSE, "%s:%d:requires\n", zconf_curname(), zconf_lineno());
410};
411
412/* prompt statement */
413
414prompt_stmt_opt:
415 /* empty */
416 | prompt if_expr
417{
418 menu_add_prompt(P_PROMPT, $1, $2);
419};
420
421prompt: T_WORD
422 | T_WORD_QUOTE
423;
424
425end: T_ENDMENU T_EOL { $$ = $1; }
426 | T_ENDCHOICE T_EOL { $$ = $1; }
427 | T_ENDIF T_EOL { $$ = $1; }
428;
429
430nl:
431 T_EOL
432 | nl T_EOL
433;
434
435if_expr: /* empty */ { $$ = NULL; }
436 | T_IF expr { $$ = $2; }
437;
438
439expr: symbol { $$ = expr_alloc_symbol($1); }
440 | symbol T_EQUAL symbol { $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
441 | symbol T_UNEQUAL symbol { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
442 | T_OPEN_PAREN expr T_CLOSE_PAREN { $$ = $2; }
443 | T_NOT expr { $$ = expr_alloc_one(E_NOT, $2); }
444 | expr T_OR expr { $$ = expr_alloc_two(E_OR, $1, $3); }
445 | expr T_AND expr { $$ = expr_alloc_two(E_AND, $1, $3); }
446;
447
448symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); }
449 | T_WORD_QUOTE { $$ = sym_lookup($1, 1); free($1); }
450;
451
452%%
453
454void conf_parse(const char *name)
455{
456 struct symbol *sym;
457 int i;
458
459 zconf_initscan(name);
460
461 sym_init();
462 menu_init();
463 modules_sym = sym_lookup("MODULES", 0);
464 rootmenu.prompt = menu_add_prompt(P_MENU, "Busybox Configuration", NULL);
465
466#if YYDEBUG
467 if (getenv("ZCONF_DEBUG"))
468 zconfdebug = 1;
469#endif
470 zconfparse();
471 if (zconfnerrs)
472 exit(1);
473 menu_finalize(&rootmenu);
474 for_all_symbols(i, sym) {
475 sym_check_deps(sym);
[2725]476 }
[1765]477
478 sym_change_count = 1;
479}
480
481const char *zconf_tokenname(int token)
482{
483 switch (token) {
484 case T_MENU: return "menu";
485 case T_ENDMENU: return "endmenu";
486 case T_CHOICE: return "choice";
487 case T_ENDCHOICE: return "endchoice";
488 case T_IF: return "if";
489 case T_ENDIF: return "endif";
490 case T_DEPENDS: return "depends";
491 }
492 return "<token>";
493}
494
495static bool zconf_endtoken(struct kconf_id *id, int starttoken, int endtoken)
496{
497 if (id->token != endtoken) {
498 zconf_error("unexpected '%s' within %s block",
499 kconf_id_strings + id->name, zconf_tokenname(starttoken));
500 zconfnerrs++;
501 return false;
502 }
503 if (current_menu->file != current_file) {
504 zconf_error("'%s' in different file than '%s'",
505 kconf_id_strings + id->name, zconf_tokenname(starttoken));
506 fprintf(stderr, "%s:%d: location of the '%s'\n",
507 current_menu->file->name, current_menu->lineno,
508 zconf_tokenname(starttoken));
509 zconfnerrs++;
510 return false;
511 }
512 return true;
513}
514
515static void zconfprint(const char *err, ...)
516{
517 va_list ap;
518
519 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
520 va_start(ap, err);
521 vfprintf(stderr, err, ap);
522 va_end(ap);
523 fprintf(stderr, "\n");
524}
525
526static void zconf_error(const char *err, ...)
527{
528 va_list ap;
529
530 zconfnerrs++;
531 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
532 va_start(ap, err);
533 vfprintf(stderr, err, ap);
534 va_end(ap);
535 fprintf(stderr, "\n");
536}
537
538static void zconferror(const char *err)
539{
540#if YYDEBUG
541 fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
542#endif
543}
544
545void print_quoted_string(FILE *out, const char *str)
546{
547 const char *p;
548 int len;
549
550 putc('"', out);
551 while ((p = strchr(str, '"'))) {
552 len = p - str;
553 if (len)
554 fprintf(out, "%.*s", len, str);
555 fputs("\\\"", out);
556 str = p + 1;
557 }
558 fputs(str, out);
559 putc('"', out);
560}
561
562void print_symbol(FILE *out, struct menu *menu)
563{
564 struct symbol *sym = menu->sym;
565 struct property *prop;
566
567 if (sym_is_choice(sym))
568 fprintf(out, "choice\n");
569 else
570 fprintf(out, "config %s\n", sym->name);
571 switch (sym->type) {
572 case S_BOOLEAN:
573 fputs(" boolean\n", out);
574 break;
575 case S_TRISTATE:
576 fputs(" tristate\n", out);
577 break;
578 case S_STRING:
579 fputs(" string\n", out);
580 break;
581 case S_INT:
582 fputs(" integer\n", out);
583 break;
584 case S_HEX:
585 fputs(" hex\n", out);
586 break;
587 default:
588 fputs(" ???\n", out);
589 break;
590 }
591 for (prop = sym->prop; prop; prop = prop->next) {
592 if (prop->menu != menu)
593 continue;
594 switch (prop->type) {
595 case P_PROMPT:
596 fputs(" prompt ", out);
597 print_quoted_string(out, prop->text);
598 if (!expr_is_yes(prop->visible.expr)) {
599 fputs(" if ", out);
600 expr_fprint(prop->visible.expr, out);
601 }
602 fputc('\n', out);
603 break;
604 case P_DEFAULT:
605 fputs( " default ", out);
606 expr_fprint(prop->expr, out);
607 if (!expr_is_yes(prop->visible.expr)) {
608 fputs(" if ", out);
609 expr_fprint(prop->visible.expr, out);
610 }
611 fputc('\n', out);
612 break;
613 case P_CHOICE:
614 fputs(" #choice value\n", out);
615 break;
616 default:
617 fprintf(out, " unknown prop %d!\n", prop->type);
618 break;
619 }
620 }
621 if (sym->help) {
622 int len = strlen(sym->help);
623 while (sym->help[--len] == '\n')
624 sym->help[len] = 0;
625 fprintf(out, " help\n%s\n", sym->help);
626 }
627 fputc('\n', out);
628}
629
630void zconfdump(FILE *out)
631{
632 struct property *prop;
633 struct symbol *sym;
634 struct menu *menu;
635
636 menu = rootmenu.list;
637 while (menu) {
638 if ((sym = menu->sym))
639 print_symbol(out, menu);
640 else if ((prop = menu->prompt)) {
641 switch (prop->type) {
642 case P_COMMENT:
643 fputs("\ncomment ", out);
644 print_quoted_string(out, prop->text);
645 fputs("\n", out);
646 break;
647 case P_MENU:
648 fputs("\nmenu ", out);
649 print_quoted_string(out, prop->text);
650 fputs("\n", out);
651 break;
652 default:
653 ;
654 }
655 if (!expr_is_yes(prop->visible.expr)) {
656 fputs(" depends ", out);
657 expr_fprint(prop->visible.expr, out);
658 fputc('\n', out);
659 }
660 fputs("\n", out);
661 }
662
663 if (menu->list)
664 menu = menu->list;
665 else if (menu->next)
666 menu = menu->next;
667 else while ((menu = menu->parent)) {
668 if (menu->prompt && menu->prompt->type == P_MENU)
669 fputs("\nendmenu\n", out);
670 if (menu->next) {
671 menu = menu->next;
672 break;
673 }
674 }
675 }
676}
677
678#include "lex.zconf.c"
679#include "util.c"
680#include "confdata.c"
681#include "expr.c"
682#include "symbol.c"
683#include "menu.c"
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